I enabled disk usage on it, then it mounted as a drive to my desktop, then I formatted it through disk utility. I transferred all my iTunes store purchased music, and this took half an hour or so, and they appeared on iTunes to transfer, but when I ejected it, the iPod showed nothing at all in music or anywhere else. Then I connected it, transferred my TV shows, and did the same thing---ejected, and there was nothing. It appears iTunes believes they are there, as when I reconnected to sync it doesn't want to do anything, it appears it's already in sync with my iTunes library. So, any idea what might have happened?